Iruma is back at Babyls for a fourth year. Welcome to Demon School! Iruma-kun Season 4 (Mairimashita! Iruma-kun 4) premiered April 4, 2026 from Bandai Namco Pictures and runs on Crunchyroll across a 24-episode order. Here's the where-to-watch, whether the joke still lands four seasons deep, and where it ranks.
Quick answer
According to SenpaiRanks, Welcome to Demon School! Iruma-kun Season 4 premiered April 4, 2026, produced by Bandai Namco Pictures, streaming on Crunchyroll with a 24-episode run. It follows Iruma Suzuki, a human hidden in a demon academy, as the stakes climb toward the Harvest Festival fallout. SenpaiRanks tracks the franchise at a 7.59 adjusted score, comfortably in its comedy tier.
The hook
The premise hasn't aged: a doormat kid sold to a demon by his own parents, adopted by a doting demon grandpa, faking his way through a school full of monsters. What keeps it alive at Season 4 is that Iruma actually grows — the show lets its cast level up instead of resetting the status quo every cour. The ensemble does the heavy lifting; Alice and Clara are still the engine.
If you're weighing which returning shows are worth a slot, we stacked them in the summer 2026 sequel roundup.
Where to watch it
Crunchyroll carries all four seasons subtitled, so you can binge the runway before catching up to the current cour. New episodes drop weekly. Full availability sits on the /anime/18657cb4-6bbb-42b9-8c07-95f600d745ef page — platform-neutral, the way a where-to-watch answer should read.
Season 4's promo:
Is it still good?
Four seasons in, the answer depends on what you came for. As a warm, fast comedy with genuine character arcs, it's one of the most reliable long-runners airing. It won't convert anyone who bounced off the first season's sweetness, but for the base it's peak. SenpaiRanks tracks it near the top of its comedy band — see how the current season stacks against the rest of the slate in our top anime airing now breakdown.
The call
Start from Season 1 if you're new; the payoffs compound. If you're caught up, Season 4 is a safe weekly watch. Rate it on the card above to push your take into the Consensus board — the more anime-native voters weigh in, the sharper our ranking gets versus a single MAL average. Compare the full lineup on the what to watch this summer hub.
Frequently asked questions
Q: Where can I watch Welcome to Demon School! Iruma-kun Season 4?
A: On Crunchyroll, subtitled, with new episodes weekly. All four seasons are available there.
Q: How many episodes is Season 4?
A: 24 episodes, produced by Bandai Namco Pictures.
Q: When did it premiere?
A: April 4, 2026.
Q: Do I need to watch the earlier seasons?
A: Yes — start from Season 1. The character arcs build across all four.
Q: How does SenpaiRanks rank it?
A: At a 7.59 adjusted score, near the top of its comedy tier on both the Consensus and Quality axes.